Jan 10, 2017, 1:46 PM
Quantum Vision Project Accepted Ours and five other groups, all from the University of Geneva, have been awarded a Sinergia multidisciplinary Swiss national project. The aim of this ambitious project is to investigate whether our senses, and especially our vision, are sensitive to purely quantum phenomena, like quantum interferences and photon entanglement. ​
Jan 9, 2017, 1:20 PM
Prof. Hugo Zbinden has been awarded the 2016 Heinrich-Greinacher prize from the Physical Institute of the University of Bern. The award was granted in recognition of his ground-breaking work in the fields of quantum optics and quantum cryptography.
Dec 5, 2016, 3:30 PM
His work on "High-performance single-photon detectors and applications in quantum communication", under the direction of Prof. Hugo Zbinden, has received the "J. Wurth Award", which rewards the best PhD thesis in physics. Every year, the physics Faculty of the University of Geneva rewards the best PhD thesis in physics with the "J. Wurth Award". The decision has been officially taken in November. Official website: His thesis is available…
Oct 3, 2016, 1:10 PM
Our paper demonstrating the violation of an Einstein-Podolsky-Rosen steering inequality developed for single-photon path entanglement with displacement-based detection has been published in Physical Review Letters. We use a high-rate source of heralded single-photon path-entangled states, combined with high-efficiency superconducting-based detectors, in a scheme that is free of any post-selection and thus immune to the detection loophole. This result conclusively demonstrates single-photon…
May 12, 2016, 11:15 AM
Salle de séminaire de Pinchat, Prof. Paolo Villoresi, University of Padova (Italy)
Jan 21, 2016, 3:00 PM
Our paper on the high-speed - 1.25Gbps - generation of quantum random numbers is out in the Journal of Lightwave Technology. The entropy source is based on an amplified spontaneous emission from an erbium-doped fibre, which is directly acquired using a standard small form-factor pluggable module. The module connects to the field programmable gate array (FPGA) of a QKD system. A real-time randomness extractor is implemented in the FPGA, and achieves a sustained rate of 1.25 Gb/s of provably…
Jan 21, 2016, 1:00 PM
The generation of random numbers is a task of paramount importance in modern science. A central problem for both classical and quantum randomness generation is to estimate the entropy of the data generated by a given device. in our recent paper in Physical Review Letters we present a protocol for self-testing quantum random number generation, in which the user can monitor the entropy in real time. Based on a few general assumptions, our protocol guarantees continuous generation of high
Jan 20, 2016, 1:00 PM
We have a new paper out in Optics Express on our teleportation-based “heralded photon amplification” work. We demonstrate post-selection free heralded qubit amplification for Time-Bin qubits and single photon states in an all-fibre, telecom wavelength, scheme that highlights the simplicity, stability and potential for fully integrated photonic solutions. This provides a significant advance towards demonstrating device-independent quantum key distribution as well as fundamental tests of quantum…
Jan 1, 2016, 9:00 AM
Photodynamic therapy (PDT) is a recent technique that can help the treatment of various medical conditions, from skin and prostate cancer to certain bacterial infection. In our recent paper on Biomedical Optics Express we demonstrated that using a practical and efficient InGaAs/InP single-photon detector we developed, we are able to detect the faint luminescence signal ( at 1270 nm) from the decay of singlet-oxygen, the active molecule involved in PDT. This helped quantify the amount of…
Jun 26, 2015, 4:00 PM
In our recent Physical Review Letters paper we demonstrate a novel detection scheme that provides a practical way of characterising entanglement for quantum communication networks. On the theory side, we devised a new witness of entanglement that is robust as well as scalable, meaning that it can be implemented in any number of parties, i.e. complex quantum networks. Experimentally we tested our witness for two and three parties, with different losses and with different degree of entanglement.…